Watch Fmovies. Ride along as Horseshoe Curve takes you on a captivating behind-the-scenes railroad journey in Pennsylvania's Allegheny Mountains. Trackside views allow you to see first hand some of railroading's greatest accomplishments in action. This special edition of the Dream Plan Build Video Series covers the many miles of scenery from Altoona to Johnstown, PA, complete with dynamic views that will inspire the modeler in you!